Alarm C-Lock / alarm clock

We do not want to wake our family up when the alarm clock is ringing.
One of an alarm clock is ringing,
the people who sleep beside me will be disturbed.
Therefore, the Alarm C-Lock is the different kind alarm clock
that will be wore on when we are sleep.
When the time we should wake up,
the Alarm C-Lock will be shaking to tell us to awake!
Then, we feel the shake and waking up quiet.

The Alarm C-Lock vibrate like that somebody beside you
lightly touch you and tell you....
‘Wake up’.